Graphs 1

3 marks · Normal

The straight line L passes through the points (–1, 2) and (3, 6). Calculate the gradient of the line.

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Gradient = 1

Must show: Correct use of gradient formula, Correct substitution, Final answer 1

Common mistakes: Reversing x or y values

Show mark scheme and worked solution

Marking points

M1 · 1 mark · Uses correct gradient formula: (y2-y1)/(x2-x1)

M2 · 1 mark · Substitutes values correctly: (6-2)/(3+1)

A1 · 1 mark · Final answer: 1 (follow-through)

Worked solution

The gradient of the line is 1.